Two long, straight wires are parallel and 24 cm apart. (a) If each wire carries a current of 57 A in the same direction, what is the magnitude of the magnetic force per meter (in N/m) exerted on each wire? N/m (b) Does the force pull the wires together or push them apart? O The wires are pulled together. O The wires are pushed apart. O The magnetic force per meter is zero. (c) What happens if the currents flow in opposite directions? O The wires are pulled together. O The wires are pushed apart. O The magnetic force per meter is zero.

Two long, straight wires are parallel and 24 cm apart. (a) If each wire carries a current of 57 A in the same direction, what is the magnitude of the magnetic force per meter (in N/m) exerted on each wire? N/m (b) Does the force pull the wires together or push them apart? O The wires are pulled together. O The wires are pushed apart. O The magnetic force per meter is zero. (c) What happens if the currents flow in opposite directions? O The wires are pulled together. O The wires are pushed apart. O The magnetic force per meter is zero.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 30P: Two long, straight wires are parallel and 25 cm apart. (a) If each wire carries a current of 50 A in...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

Two long, straight wires are parallel and 24 cm apart.
(a) If each wire carries a current of 57 A in the same direction, what is the magnitude of the magnetic force per meter
(in N/m) exerted on each wire?
N/m
(b) Does the force pull the wires together or push them apart?
O The wires are pulled together.
O The wires are pushed apart.
O The magnetic force per meter is zero.
(c) What happens if the currents flow in opposite directions?
O The wires are pulled together.
O The wires are pushed apart.
O The magnetic force per meter is zero.

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